光伏制氢厂房氢泄漏扩散规律数值模拟研究

Numerical Simulation Study on Hydrogen Leakage and Diffusion Law of Photovoltaic Hydrogen Production Plant

氢气由于其低密度、高扩散系数、燃爆极限范围宽等特性,极易引发燃爆事故并造成严重危害。本研究以某光伏制氢厂房为应用场景,利用计算流体动力学(CFD)方法研究氢气在不同泄漏位点(LS)处的浓度分布、扩散规律和燃爆风险。结果表明,在机械通风系统完备条件下氢气泄漏扩散能被有效控制,但在厂房周边管道泄漏时存在积聚形成可燃气云的风险。本研究可为氢气制备、储存和运输过程的安全管理提供参考。

Due to the low density,high diffusion coefficient and wide explosion limit range of hydrogen,it is easy to cause explosion accidents and cause serious harm.In this study,computational fluid dynamics(CFD)methods were used to study the concentration distribution,diffusion law and explosion risk of hydrogen at different leakage sites(LS).The results show that the hydrogen leakage and diffusion can be effectively controlled under the condition of complete mechanical ventilation system,but there is a risk of accumulation and formation of combustible gas cloud when the pipeline leakage around the plant is completed.This study can provide a reference for the safety management of hydrogen preparation,storage and transportation.